全文获取类型
收费全文 | 386篇 |
免费 | 13篇 |
专业分类
各国政治 | 21篇 |
工人农民 | 26篇 |
世界政治 | 28篇 |
外交国际关系 | 20篇 |
法律 | 203篇 |
政治理论 | 94篇 |
综合类 | 7篇 |
出版年
2023年 | 3篇 |
2020年 | 7篇 |
2019年 | 13篇 |
2018年 | 16篇 |
2017年 | 10篇 |
2016年 | 13篇 |
2015年 | 4篇 |
2014年 | 6篇 |
2013年 | 72篇 |
2012年 | 11篇 |
2011年 | 9篇 |
2010年 | 9篇 |
2009年 | 10篇 |
2008年 | 15篇 |
2007年 | 13篇 |
2006年 | 13篇 |
2005年 | 11篇 |
2004年 | 11篇 |
2003年 | 5篇 |
2002年 | 12篇 |
2001年 | 10篇 |
2000年 | 10篇 |
1999年 | 7篇 |
1998年 | 6篇 |
1997年 | 5篇 |
1996年 | 5篇 |
1995年 | 5篇 |
1994年 | 5篇 |
1993年 | 4篇 |
1992年 | 7篇 |
1991年 | 2篇 |
1990年 | 4篇 |
1989年 | 5篇 |
1988年 | 6篇 |
1987年 | 3篇 |
1986年 | 4篇 |
1985年 | 4篇 |
1984年 | 4篇 |
1983年 | 4篇 |
1982年 | 3篇 |
1981年 | 3篇 |
1980年 | 3篇 |
1979年 | 4篇 |
1978年 | 2篇 |
1977年 | 2篇 |
1976年 | 2篇 |
1975年 | 2篇 |
1974年 | 2篇 |
1973年 | 3篇 |
1971年 | 2篇 |
排序方式: 共有399条查询结果,搜索用时 15 毫秒
41.
42.
43.
44.
45.
46.
Robert Cohen Laura Preiser Susan Gottlieb Robert Harris Jeri Baker Neil Sonenklar 《Law and human behavior》1993,17(1):121-134
A review of the literature was conducted to assess the extent and nature of the practice of requiring parents to transfer custody in order to receive public funding for intensive services needed by their child/adolescent who had a serious emotional disorder. The review focused on the legal and policy basis of this practice as well as its social and psychological impact on child and family. We conclude that the practice of transfer of custody as a requirement for receiving financial aid occurs in a majority of states, though the actual extent of this practice is not known. The major factor influencing the use of transfer of custody appears to be the absence of an appropriate and adequate system of services for children and adolescents with serious emotional disorders. We recommend that the practice of requiring custody transfer for the sole purpose of receiving services be abolished and offer several suggestions for improving acess to services.Preparation of this article was supported in part by the National Institute of Mental Health (NIMH) under contract no. 89MF761903. The authors are grateful to John Burke and Kelly Kelleher of the Division of Biometry and Applied Sciences, NIMH for their assistance on this project. Laurie Flynn, Executive Director for the National Alliance for the Mentally Ill, was very helpful during the informative stage of the project. Barbara Friesen, Director of the Research and Training Center at Portland State University, gave us useful guidance throughout the project. We thank Stephen Hill, Consultant to the National Governors' Association, for his help. We are grateful to Amy Hewitt and Carol Ishler for their assistance in preparing this report. We also would like to acknowledge several individuals who assisted us with research reported in this article. We are grateful to Governor Richard F. Celeste of Ohio for his letter of support for the state survey of custody transfer practices. We appreciate the efforts on behalf of this survey by staff from the State of Ohio, particularly Jean Ellen Stevens, Administrative Assistant to the Director of the Department of Mental Health. Margraret McNally assisted in the compilation of data for both surveys. 相似文献
47.
Because the hair neonates are born with grows during the last 3 months of pregnancy, the presence of drugs (e.g. cocaine) or environmental toxins (e.g. nicotine) reflects fetal exposure to such compounds. In the case of cocaine, hair measurement are several fold more sensitive than maternal history or urine measurements. Measurements of cotinine in neonatal hair are capable of distinguishing between fetal exposure to passive versus active smoking. Because most cocaine users also smoke cigarettes, neonatal measurements of both cocaine and cotinine will allow cumulative quantification of fetal risk. 相似文献
48.
The authors were confronted with developing a use-of-force/self-defense training program and were directly responsible for
the implementation of this new inservice program. The authors found through the research, that the psychological factors were
more important than the psychomotor self-defense tactics. 相似文献
49.
This study presents the prevalence of ethanol and illicit drugs in fatal road traffic accident victims in the Centre of Portugal between January 1990 and December 2007. Among the violent deaths, road traffic accidents presented the highest percentage (around 35%; n=3095), but decreasing throughout the years. Accidents were preponderant in males (about 80%; n=2402), between 21 and 30 years-old. Accidents involving drivers (55%; n=1310) were of the most common, being the car the main vehicle (45%), followed by the motorcycle (40%). An alcohol analysis request was present in 50% of the cases (n=1687), but increasing each year. Ethanol concentrations >1.2g/L, the legal limit in Portugal, were found in 55% (n=283) of the cases. Concerning drugs of abuse requests, only 4.4% (n=137) and 17.3% (58 cases) of the cases included the analysis at the Forensic Pathology Department (FPD) and at the Medico-Legal Office (MLO), respectively. Among the road accident cases analysed, 18 were positive, mainly in men (84%), between 21 and 30 years-old; opiates (47.1%; n=8) and cannabinoids (50%; n=4) were the most found, at the FPD and at the MLO, respectively. In conclusion, ethanol was identified as a key factor to traffic accidents, which explains the definition of specific legislation and methods of enforcement to prohibit this form of impairing. Nevertheless, ethanol still remains the psychoactive substance most frequently identified in the blood of divers killed in road-traffic crashes, recommending additional actions of supervision and control. 相似文献
50.
Fourier-transform infrared spectroscopy (FTIR), discriminate analysis, X-ray fluorescence spectrometry (XRF), and stereoscopic microscopy were used to separate black coral forensic evidence items from similarly appearing items manufactured from plastics, bovid keratin, and mangrove wood. In addition, novel observations were made of bromine and iodine relationships in black coral that have not been previously reported. 相似文献